Movie S3.

Time-lapse of starfish oocytes expressing POLArIS^act during the polar body extrusion with two-axis green/magenta FPM (left) and bright-field view (right), related to Fig. 3B. The positions of the polar body extrusion and the accumulation of contractile ring-like F-actin are shown by arrowhead and arrow, respectively. x312 actual speed.